package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 执行DQL语句SELECT语句
 */
public class JDBCDemo4 {
    public static void main(String[] args) {
        /*
            查看每个老师的:id,name,salary,title

            SELECT id,name,salary,title
            FROM teacher
         */
        try (
                Connection connection = DBUtil.getConnection();
        ){
            Statement statement = connection.createStatement();
            String sql = "SELECT id,name,salary,title " +
                    "FROM teacher ";

            ResultSet rs = statement.executeQuery(sql);
            while(rs.next()){
                int id = rs.getInt("id");
                String name = rs.getString("name");
                int salary = rs.getInt("salary");
                String title = rs.getString("title");
                System.out.println(id + " " + name + " " + salary + " " + title);
            }

        } catch (SQLException e) {
            e.printStackTrace();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}








